Amplifier



FIG. 1 is a front isometric view of an amplifier, showing my new design.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a back elevation view thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is a bottom plan view thereof.

FIG. 6 is a left side elevation view thereof; and,

FIG. 7 is a right side elevation view thereof.

The dot-dash broken lines of FIGS. 1, 4, and 5 are included to show the boundary between the claimed portion and unclaimed portion only and form no part of the claimed design. 

CLAIM I claim the ornamental design for an amplifier, as shown and described. 